Gameone-shot · 0.54 s
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Sword Swing
A blade slicing through the air: thin whistling whoosh with a fast Doppler sweep and a metallic edge
one-shot · 0.41 s · 0 downloads · 0 likes
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Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get 39V18TB8QR@1 -o sword-swing.wav
How it's made
- Source
- a thin blade moving at 20–30 m/s sheds turbulence from its edge: broadband air noise (pink, high-passed at 250 Hz). A sharp trailing edge also sheds vortices at a regular rate, a thin whistle around 2.5–5 kHz.
- Body
- no solid rings, the air is shaped by the pass. A band-pass (Q ≈ 1.4) rises fast to 3–6 kHz as the blade approaches and falls away after it passes (Doppler-like brightness). The whistle is a narrow resonator (Q ≈ 40) plus a sine that follow the same curve with a slight downward Doppler bend. A faint metallic edge comes from inharmonic metal-bar modes (≈ 1 : 2.76 : 5.4 : 8.9) at 3–7 kHz excited by a bright noise burst.
- Envelope
- the level swells over ≈ 55 % of the length to the pass-by peak, then drops quickly (≈ 40 %). The whistle peaks slightly after the air; the metallic shimmer is a short burst around the peak.
- Variation
- `rng` shifts the peak time by a few percent and tunes the whistle and modes by ±3 %; the travel parameter pans the pass-by across the stereo field. Presets change speed, edge, whistle and direction.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| length | 0.2 – 0.9 | 0.3 | s | Length |
| brightness | 0 – 1 | 0.6 | — | Brightness |
| whistle | 0 – 1 | 0.5 | — | Whistle |
| edge | 0 – 1 | 0.4 | — | Metal edge |
| travel | -1 – 1 | 0.6 | — | Negative values travel right to left |
| seed | int | 1 | — | Variation, reproducible |
The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.
Revision history1
- r12026-10-24engine 1.0.1use('39V18TB8QR@1')